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Multiple Choice
High levels of Maturation Promoting Factor (MPF) are associated with which phase in the cell cycle?
A
G1 phase
B
S phase
C
G2 phase
D
M phase
Verified step by step guidance
1
Understand the role of Maturation Promoting Factor (MPF) in the cell cycle. MPF is a complex of cyclin and cyclin-dependent kinase (CDK) that is crucial for the progression of cells from the G2 phase to the M phase.
Recognize that the cell cycle consists of several phases: G1, S, G2, and M. Each phase has specific functions and regulatory mechanisms.
Identify that MPF activity is low during the G1 and S phases, as these phases are primarily focused on cell growth and DNA replication, respectively.
Note that MPF levels begin to rise during the G2 phase, preparing the cell for mitosis by initiating processes such as chromatin condensation and nuclear envelope breakdown.
Conclude that high levels of MPF are specifically associated with the M phase, where it facilitates the transition from G2 to mitosis, ensuring proper cell division.